My dad have a E46 bmw. Reciently the central locking started playing up. The key does not open the central locking. He can open the driver side door with the key ,use the car and the key remote will lock the doors but will not open them again. The key will only close the central locking but will not open.
The button in side the car that locks/shuts the central locking will only closes the lock and not open them.
Can some one please tell me what the problem is. Is it the key remote or is there a fault within the car and how can I fix it with out taking it to the dealer for a expensive fix,